What is WiFi Technology?
Historical Background
Key Points
10 points- 1.
Uses the IEEE 802.11 standard for wireless communication.
- 2.
Operates in different frequency bands, including 2.4 GHz, 5 GHz, and now 6 GHz.
- 3.
Provides wireless internet access to devices like laptops, smartphones, and tablets.
- 4.
Requires a wireless router or access point to create a WiFi network.
- 5.
Security protocols like WPA2 and WPA3 are used to protect WiFi networks.
Visual Insights
Evolution of WiFi Technology
Shows the key milestones in the development of WiFi technology, from its inception to the latest standards.
WiFi technology has evolved significantly since its inception, driven by the need for faster speeds, greater range, and improved security.
- 1997IEEE 802.11 (first WiFi standard) released
- 1999WiFi Alliance formed
- 2003802.11g standard introduced (faster speeds)
- 2009802.11n standard introduced (MIMO technology)
- 2013802.11ac standard introduced (even faster speeds)
- 2018WPA3 security protocol introduced
- 2019WiFi 6 (802.11ax) standard introduced
- 2020WiFi 6E introduced, utilizing the 6 GHz band
- 2026DoT de-licenses half of 6 GHz band for WiFi use in India
Source Topic
DoT De-licenses Half of 6 GHz Band for WiFi Use
Science & TechnologyUPSC Relevance
Frequently Asked Questions
61. What is WiFi technology, and what are its key provisions relevant for the UPSC GS Paper 3 exam?
WiFi is a wireless networking technology that allows devices to connect to the internet or communicate wirelessly using radio waves. Key provisions include: * Usage of IEEE 802.11 standard for wireless communication. * Operation in 2.4 GHz, 5 GHz, and 6 GHz frequency bands. * Providing wireless internet access to various devices. * Requirement of a wireless router or access point. * Employment of security protocols like WPA2 and WPA3.
- •Uses IEEE 802.11 standard.
- •Operates in 2.4 GHz, 5 GHz, and 6 GHz bands.
- •Provides wireless internet access.
- •Requires a wireless router.
- •Uses security protocols like WPA2 and WPA3.
Exam Tip
Remember the frequency bands and security protocols for prelims. For mains, focus on applications and challenges.